顺层长钻孔预抽瓦斯区域防突措施研究

Study on Outburst Prevention Measures in Bedding Gas Drainage Region

顺层瓦斯抽采是高瓦斯矿井抽采的重要方法之一。文中基于某矿西井田地质条件,进行了顺层定向钻孔及顺层普通长钻孔两种抽采方法的理论分析,同时,为了验证抽采过程中煤层透气性和效果准确性,对两种抽采效果进行量化对比,结果表明顺层定向钻孔抽采工艺能够满足要求,可以作为西井区预抽钻孔防突效果预测,从而指导矿井抽、掘、采衔接规划。

Bedding gas drainage is one of the important methods of gas drainage in collieries .By theoretical anal‐ysis of two drainage methods with directional drilling and ordinary long -borehole drilling ,the author makes a quantitative comparison with two drainage results to verify the permeability of seam and the effect accuracy in the process of drainage ,w hich show s that bedding directional drilling technique can meet the requirements in outburst prevention effect prediction and provide a guidance for the integration planning of drainage ,tunneling and mining in collieries .